OpenTelemetry - CNCF
open-telemetry
OpenTelemetry makes robust, portable telemetry a built-in feature of cloud-native software.
Bootstrapping Microservices (1st edition)
bootstrapping-microservices
Example code for the 1st edition of Bootstrapping Microservices. For 2nd edition code: https://github.com/bootstrapping-microservices-2nd-edition